Japan. Yūseishō. Yūmukyoku. (1950). Shōwa 25-nendo o-toshidama tsuki yūbin hagaki kankei shiryō. Yūseishō Yūmukyoku.
Chicago Style aipamenaJapan. Yūseishō. Yūmukyoku. Shōwa 25-nendo O-toshidama Tsuki Yūbin Hagaki Kankei Shiryō. [Tokyo]: Yūseishō Yūmukyoku, 1950.
MLA aipamenaJapan. Yūseishō. Yūmukyoku. Shōwa 25-nendo O-toshidama Tsuki Yūbin Hagaki Kankei Shiryō. Yūseishō Yūmukyoku, 1950.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.